Welcome to Perma Laboratories Since 1986, we have offered Perma Soft, the Professional Denture Reline Kit that's Now Available over the counter for Denture Wearers in need of a Denture Reliner. We also carry ProSoft Denture Reiner, which is a softer denture liner and works best for those with newly extracted teeth or sore gums. Its healing properties soothe sore gums while at the same times, keeps your denture secure and in place.